<!DOCTYPE html>
<html>
<head>
    <title>500 INTERNEL - ERROR </title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no">
    <style type="text/css">
    body {
        padding-top: 30px;
    }
        div {
            width: 100%;
            margin: 20px auto;
            text-align: center;
        }
        .tip {
            color: #bbb;
            font-size: 16px;
        }

        .backBtn {
            width: 160px;
            height: 50px;
            line-height: 50px;
            background: #fff;
            border-radius: 5px;
            border: 1px solid #ff9515;
            color: #ff9515;
            font-size: 24px;
            margin-top: 60px;
        }
    </style>
</head>
<body>
    <div>
        <img src="" >
    </div>
    <div>
        <span class="tip">500 哇哦 服务器维护升级中~</span>
    </div>
    <div>
        <button class="backBtn">返回上一页</button>
    </div>
    <script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js"></script>
    <script type="text/javascript">
        $('.backBtn').click(function () {
            history.go(-1);
        })
    </script>
</body>
</html>